If you receive a One Time Password sent to your Two-Step Verification enabled device and you are not actively logging in to Amazon, reset your password immediately and review your account for any other unauthorized changes. If you cannot access your account anymore, you can recover Your Account here.
Before you begin account recovery, follow the steps below:
- Try to sign in with a registered backup method or from a trusted device.
- If successful, review your primary phone number.
- And check the authenticator app’s enabled on your account.
To learn more, you can get help in Seller Central for "About Two-Step Verification".